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A012139 as a simple table

n a(n)
0 1
1 4
2 84
3 4208
4 386064
5 56523072
6 12121690944
7 3589856932608
8 1406019035808000
9 704535958463063040
10 439949357001315947520
11 335139715537167259791360
12 305989012726577998256148480

[1,4,84,4208,386064,56523072,12121690944,
 3589856932608,1406019035808000,704535958463063040,
 439949357001315947520,335139715537167259791360,
 305989012726577998256148480]

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Last modified April 18 08:14 EDT 2024. Contains 371769 sequences. (Running on oeis4.)